projects / mirror_edk2.git / blame
| Commit | Line | Data |
|---|---|---|
| a338fb22 LG |
1 | ;------------------------------------------------------------------------------\r |
| 2 | ;\r | |
| 3 | ; Copyright (c) 2010 - 2015, Intel Corporation. All rights reserved.<BR>\r | |
| 85f7e110 | 4 | ; SPDX-License-Identifier: BSD-2-Clause-Patent\r |
| a338fb22 LG |
5 | ;\r |
| 6 | ; Module Name:\r | |
| 7 | ;\r | |
| 8 | ; AsmFuncs.nasm\r | |
| 9 | ;\r | |
| 10 | ; Abstract:\r | |
| 11 | ;\r | |
| 12 | ; Debug interrupt handle functions.\r | |
| 13 | ;\r | |
| 14 | ;------------------------------------------------------------------------------\r | |
| 15 | \r | |
| 16 | #include "DebugException.h"\r | |
| 17 | \r | |
| 18 | ;\r | |
| 19 | ; InterruptProcess()\r | |
| 20 | ;\r | |
| 21 | extern ASM_PFX(InterruptProcess)\r | |
| 22 | \r | |
| 23 | global ASM_PFX(Exception0Handle)\r | |
| 24 | global ASM_PFX(TimerInterruptHandle)\r | |
| 25 | global ASM_PFX(ExceptionStubHeaderSize)\r | |
| 26 | \r | |
| 27 | %macro AGENT_HANDLER_SIGNATURE 0\r | |
| 28 | db 0x41, 0x47, 0x54, 0x48 ; SIGNATURE_32('A','G','T','H')\r | |
| 29 | %endmacro\r | |
| 30 | \r | |
| 31 | SECTION .data\r | |
| 32 | \r | |
| 33 | ASM_PFX(ExceptionStubHeaderSize): DD Exception1Handle - ASM_PFX(Exception0Handle)\r | |
| 34 | CommonEntryAddr: DD CommonEntry\r | |
| 35 | \r | |
| 36 | SECTION .text\r | |
| 37 | \r | |
| 38 | AGENT_HANDLER_SIGNATURE\r | |
| 39 | ASM_PFX(Exception0Handle):\r | |
| 40 | cli\r | |
| 41 | push eax\r | |
| 42 | mov eax, 0\r | |
| 43 | jmp dword [CommonEntryAddr]\r | |
| 44 | AGENT_HANDLER_SIGNATURE\r | |
| 45 | Exception1Handle:\r | |
| 46 | cli\r | |
| 47 | push eax\r | |
| 48 | mov eax, 1\r | |
| 49 | jmp dword [CommonEntryAddr]\r | |
| 50 | AGENT_HANDLER_SIGNATURE\r | |
| 51 | Exception2Handle:\r | |
| 52 | cli\r | |
| 53 | push eax\r | |
| 54 | mov eax, 2\r | |
| 55 | jmp dword [CommonEntryAddr]\r | |
| 56 | AGENT_HANDLER_SIGNATURE\r | |
| 57 | Exception3Handle:\r | |
| 58 | cli\r | |
| 59 | push eax\r | |
| 60 | mov eax, 3\r | |
| 61 | jmp dword [CommonEntryAddr]\r | |
| 62 | AGENT_HANDLER_SIGNATURE\r | |
| 63 | Exception4Handle:\r | |
| 64 | cli\r | |
| 65 | push eax\r | |
| 66 | mov eax, 4\r | |
| 67 | jmp dword [CommonEntryAddr]\r | |
| 68 | AGENT_HANDLER_SIGNATURE\r | |
| 69 | Exception5Handle:\r | |
| 70 | cli\r | |
| 71 | push eax\r | |
| 72 | mov eax, 5\r | |
| 73 | jmp dword [CommonEntryAddr]\r | |
| 74 | AGENT_HANDLER_SIGNATURE\r | |
| 75 | Exception6Handle:\r | |
| 76 | cli\r | |
| 77 | push eax\r | |
| 78 | mov eax, 6\r | |
| 79 | jmp dword [CommonEntryAddr]\r | |
| 80 | AGENT_HANDLER_SIGNATURE\r | |
| 81 | Exception7Handle:\r | |
| 82 | cli\r | |
| 83 | push eax\r | |
| 84 | mov eax, 7\r | |
| 85 | jmp dword [CommonEntryAddr]\r | |
| 86 | AGENT_HANDLER_SIGNATURE\r | |
| 87 | Exception8Handle:\r | |
| 88 | cli\r | |
| 89 | push eax\r | |
| 90 | mov eax, 8\r | |
| 91 | jmp dword [CommonEntryAddr]\r | |
| 92 | AGENT_HANDLER_SIGNATURE\r | |
| 93 | Exception9Handle:\r | |
| 94 | cli\r | |
| 95 | push eax\r | |
| 96 | mov eax, 9\r | |
| 97 | jmp dword [CommonEntryAddr]\r | |
| 98 | AGENT_HANDLER_SIGNATURE\r | |
| 99 | Exception10Handle:\r | |
| 100 | cli\r | |
| 101 | push eax\r | |
| 102 | mov eax, 10\r | |
| 103 | jmp dword [CommonEntryAddr]\r | |
| 104 | AGENT_HANDLER_SIGNATURE\r | |
| 105 | Exception11Handle:\r | |
| 106 | cli\r | |
| 107 | push eax\r | |
| 108 | mov eax, 11\r | |
| 109 | jmp dword [CommonEntryAddr]\r | |
| 110 | AGENT_HANDLER_SIGNATURE\r | |
| 111 | Exception12Handle:\r | |
| 112 | cli\r | |
| 113 | push eax\r | |
| 114 | mov eax, 12\r | |
| 115 | jmp dword [CommonEntryAddr]\r | |
| 116 | AGENT_HANDLER_SIGNATURE\r | |
| 117 | Exception13Handle:\r | |
| 118 | cli\r | |
| 119 | push eax\r | |
| 120 | mov eax, 13\r | |
| 121 | jmp dword [CommonEntryAddr]\r | |
| 122 | AGENT_HANDLER_SIGNATURE\r | |
| 123 | Exception14Handle:\r | |
| 124 | cli\r | |
| 125 | push eax\r | |
| 126 | mov eax, 14\r | |
| 127 | jmp dword [CommonEntryAddr]\r | |
| 128 | AGENT_HANDLER_SIGNATURE\r | |
| 129 | Exception15Handle:\r | |
| 130 | cli\r | |
| 131 | push eax\r | |
| 132 | mov eax, 15\r | |
| 133 | jmp dword [CommonEntryAddr]\r | |
| 134 | AGENT_HANDLER_SIGNATURE\r | |
| 135 | Exception16Handle:\r | |
| 136 | cli\r | |
| 137 | push eax\r | |
| 138 | mov eax, 16\r | |
| 139 | jmp dword [CommonEntryAddr]\r | |
| 140 | AGENT_HANDLER_SIGNATURE\r | |
| 141 | Exception17Handle:\r | |
| 142 | cli\r | |
| 143 | push eax\r | |
| 144 | mov eax, 17\r | |
| 145 | jmp dword [CommonEntryAddr]\r | |
| 146 | AGENT_HANDLER_SIGNATURE\r | |
| 147 | Exception18Handle:\r | |
| 148 | cli\r | |
| 149 | push eax\r | |
| 150 | mov eax, 18\r | |
| 151 | jmp dword [CommonEntryAddr]\r | |
| 152 | AGENT_HANDLER_SIGNATURE\r | |
| 153 | Exception19Handle:\r | |
| 154 | cli\r | |
| 155 | push eax\r | |
| 156 | mov eax, 19\r | |
| 157 | jmp dword [CommonEntryAddr]\r | |
| 158 | AGENT_HANDLER_SIGNATURE\r | |
| 159 | ASM_PFX(TimerInterruptHandle):\r | |
| 160 | cli\r | |
| 161 | push eax\r | |
| 162 | mov eax, 32\r | |
| 163 | jmp dword [CommonEntryAddr]\r | |
| 164 | \r | |
| 165 | CommonEntry:\r | |
| 166 | ;\r | |
| 167 | ; +---------------------+\r | |
| 168 | ; + EFlags +\r | |
| 169 | ; +---------------------+\r | |
| 170 | ; + CS +\r | |
| 171 | ; +---------------------+\r | |
| 172 | ; + EIP +\r | |
| 173 | ; +---------------------+\r | |
| 174 | ; + Error Code +\r | |
| 175 | ; +---------------------+\r | |
| 176 | ; + EAX / Vector Number +\r | |
| 177 | ; +---------------------+\r | |
| 178 | ; + EBP +\r | |
| 179 | ; +---------------------+ <-- EBP\r | |
| 180 | ;\r | |
| 181 | cmp eax, DEBUG_EXCEPT_DOUBLE_FAULT\r | |
| 182 | je NoExtrPush\r | |
| 183 | cmp eax, DEBUG_EXCEPT_INVALID_TSS\r | |
| 184 | je NoExtrPush\r | |
| 185 | cmp eax, DEBUG_EXCEPT_SEG_NOT_PRESENT\r | |
| 186 | je NoExtrPush\r | |
| 187 | cmp eax, DEBUG_EXCEPT_STACK_FAULT\r | |
| 188 | je NoExtrPush\r | |
| 189 | cmp eax, DEBUG_EXCEPT_GP_FAULT\r | |
| 190 | je NoExtrPush\r | |
| 191 | cmp eax, DEBUG_EXCEPT_PAGE_FAULT\r | |
| 192 | je NoExtrPush\r | |
| 193 | cmp eax, DEBUG_EXCEPT_ALIGNMENT_CHECK\r | |
| 194 | je NoExtrPush\r | |
| 195 | \r | |
| 196 | push dword [esp]\r | |
| 197 | mov dword [esp + 4], 0\r | |
| 198 | \r | |
| 199 | NoExtrPush:\r | |
| 200 | \r | |
| 201 | push ebp\r | |
| 202 | mov ebp, esp ; save esp in ebp\r | |
| 203 | ;\r | |
| 204 | ; Make stack 16-byte alignment to make sure save fxrstor later\r | |
| 205 | ;\r | |
| 206 | and esp, 0xfffffff0\r | |
| 207 | sub esp, 12\r | |
| 208 | \r | |
| 209 | ; store UINT32 Edi, Esi, Ebp, Ebx, Edx, Ecx, Eax;\r | |
| 210 | push dword [ebp + 4] ; original eax\r | |
| 211 | push ebx\r | |
| 212 | push ecx\r | |
| 213 | push edx\r | |
| 214 | mov ebx, eax ; save vector in ebx\r | |
| 215 | mov eax, ebp\r | |
| 216 | add eax, 4 * 6\r | |
| 217 | push eax ; original ESP\r | |
| 218 | push dword [ebp] ; EBP\r | |
| 219 | push esi\r | |
| 220 | push edi\r | |
| 221 | \r | |
| 222 | ;; UINT32 Cr0, Cr1, Cr2, Cr3, Cr4;\r | |
| 223 | ;; insure FXSAVE/FXRSTOR is enabled in CR4...\r | |
| 224 | ;; ... while we're at it, make sure DE is also enabled...\r | |
| 225 | mov eax, 1\r | |
| 226 | push ebx ; temporarily save value of ebx on stack\r | |
| 227 | cpuid ; use CPUID to determine if FXSAVE/FXRESTOR and\r | |
| 228 | ; DE are supported\r | |
| a302263e | 229 | pop ebx ; restore value of ebx that was overwritten by CPUID\r |
| a338fb22 LG |
230 | mov eax, cr4\r |
| 231 | push eax ; push cr4 firstly\r | |
| 232 | test edx, BIT24 ; Test for FXSAVE/FXRESTOR support\r | |
| 233 | jz .0\r | |
| 234 | or eax, BIT9 ; Set CR4.OSFXSR\r | |
| 235 | .0:\r | |
| 236 | test edx, BIT2 ; Test for Debugging Extensions support\r | |
| 237 | jz .1\r | |
| 238 | or eax, BIT3 ; Set CR4.DE\r | |
| 239 | .1:\r | |
| 240 | mov cr4, eax\r | |
| 241 | mov eax, cr3\r | |
| 242 | push eax\r | |
| 243 | mov eax, cr2\r | |
| 244 | push eax\r | |
| 245 | push 0 ; cr0 will not saved???\r | |
| 246 | mov eax, cr0\r | |
| 247 | push eax\r | |
| 248 | \r | |
| 249 | xor ecx, ecx\r | |
| 250 | mov ecx, Ss\r | |
| 251 | push ecx\r | |
| 252 | mov ecx, Cs\r | |
| 253 | push ecx\r | |
| 254 | mov ecx, Ds\r | |
| 255 | push ecx\r | |
| 256 | mov ecx, Es\r | |
| 257 | push ecx\r | |
| 258 | mov ecx, Fs\r | |
| 259 | push ecx\r | |
| 260 | mov ecx, Gs\r | |
| 261 | push ecx\r | |
| 262 | \r | |
| 263 | ;; EIP\r | |
| 264 | mov ecx, [ebp + 4 * 3] ; EIP\r | |
| 265 | push ecx\r | |
| 266 | \r | |
| 267 | ;; UINT32 Gdtr[2], Idtr[2];\r | |
| 268 | sub esp, 8\r | |
| 269 | sidt [esp]\r | |
| 270 | sub esp, 8\r | |
| 271 | sgdt [esp]\r | |
| 272 | \r | |
| 273 | ;; UINT32 Ldtr, Tr;\r | |
| 274 | xor eax, eax\r | |
| 275 | str ax\r | |
| 276 | push eax\r | |
| 277 | sldt ax\r | |
| 278 | push eax\r | |
| 279 | \r | |
| 280 | ;; EFlags\r | |
| 281 | mov ecx, [ebp + 4 * 5]\r | |
| 282 | push ecx\r | |
| 283 | \r | |
| 284 | ;; UINT32 Dr0, Dr1, Dr2, Dr3, Dr6, Dr7;\r | |
| 285 | mov eax, dr7\r | |
| 286 | push eax\r | |
| 287 | \r | |
| 288 | ;; clear Dr7 while executing debugger itself\r | |
| 289 | xor eax, eax\r | |
| 290 | mov dr7, eax\r | |
| 291 | \r | |
| 292 | ;; Dr6\r | |
| 293 | mov eax, dr6\r | |
| 294 | push eax\r | |
| 295 | \r | |
| 296 | ;; insure all status bits in dr6 are clear...\r | |
| 297 | xor eax, eax\r | |
| 298 | mov dr6, eax\r | |
| 299 | \r | |
| 300 | mov eax, dr3\r | |
| 301 | push eax\r | |
| 302 | mov eax, dr2\r | |
| 303 | push eax\r | |
| 304 | mov eax, dr1\r | |
| 305 | push eax\r | |
| 306 | mov eax, dr0\r | |
| 307 | push eax\r | |
| 308 | \r | |
| 309 | ;; Clear Direction Flag\r | |
| 310 | cld\r | |
| 311 | \r | |
| 312 | ;; FX_SAVE_STATE_IA32 FxSaveState;\r | |
| 313 | sub esp, 512\r | |
| 314 | mov edi, esp\r | |
| 315 | ;; Clear the buffer\r | |
| 316 | xor eax, eax\r | |
| 317 | mov ecx, 128 ;= 512 / 4\r | |
| 318 | rep stosd\r | |
| 319 | mov edi, esp\r | |
| 320 | \r | |
| 321 | test edx, BIT24 ; Test for FXSAVE/FXRESTOR support.\r | |
| 322 | ; edx still contains result from CPUID above\r | |
| 323 | jz .2\r | |
| 324 | db 0xf, 0xae, 00000111y ;fxsave [edi]\r | |
| 325 | .2:\r | |
| 326 | \r | |
| 327 | ;; save the exception data\r | |
| 328 | push dword [ebp + 8]\r | |
| 329 | \r | |
| 330 | ; call the C interrupt process function\r | |
| 331 | push esp ; Structure\r | |
| 332 | push ebx ; vector\r | |
| 333 | call ASM_PFX(InterruptProcess)\r | |
| 334 | add esp, 8\r | |
| 335 | \r | |
| 336 | ; skip the exception data\r | |
| 337 | add esp, 4\r | |
| 338 | \r | |
| 339 | ;; FX_SAVE_STATE_IA32 FxSaveState;\r | |
| 340 | mov esi, esp\r | |
| 341 | mov eax, 1\r | |
| 342 | cpuid ; use CPUID to determine if FXSAVE/FXRESTOR are supported\r | |
| 343 | test edx, BIT24 ; Test for FXSAVE/FXRESTOR support\r | |
| 344 | jz .3\r | |
| 345 | db 0xf, 0xae, 00001110y ; fxrstor [esi]\r | |
| 346 | .3:\r | |
| 347 | add esp, 512\r | |
| 348 | \r | |
| 349 | ;; UINT32 Dr0, Dr1, Dr2, Dr3, Dr6, Dr7;\r | |
| 350 | pop eax\r | |
| 351 | mov dr0, eax\r | |
| 352 | pop eax\r | |
| 353 | mov dr1, eax\r | |
| 354 | pop eax\r | |
| 355 | mov dr2, eax\r | |
| 356 | pop eax\r | |
| 357 | mov dr3, eax\r | |
| 358 | ;; skip restore of dr6. We cleared dr6 during the context save.\r | |
| 359 | add esp, 4\r | |
| 360 | pop eax\r | |
| 361 | mov dr7, eax\r | |
| 362 | \r | |
| 363 | ;; set EFlags\r | |
| 364 | pop dword [ebp + 4 * 5] ; set EFLAGS in stack\r | |
| 365 | \r | |
| 366 | ;; UINT32 Ldtr, Tr;\r | |
| 367 | ;; UINT32 Gdtr[2], Idtr[2];\r | |
| 368 | ;; Best not let anyone mess with these particular registers...\r | |
| 369 | add esp, 24\r | |
| 370 | \r | |
| 371 | ;; UINT32 Eip;\r | |
| 372 | pop dword [ebp + 4 * 3] ; set EIP in stack\r | |
| 373 | \r | |
| 374 | ;; UINT32 Gs, Fs, Es, Ds, Cs, Ss;\r | |
| 375 | ;; NOTE - modified segment registers could hang the debugger... We\r | |
| 376 | ;; could attempt to insulate ourselves against this possibility,\r | |
| 377 | ;; but that poses risks as well.\r | |
| 378 | ;;\r | |
| 379 | pop gs\r | |
| 380 | pop fs\r | |
| 381 | pop es\r | |
| 382 | pop ds\r | |
| 383 | pop dword [ebp + 4 * 4] ; set CS in stack\r | |
| 384 | pop ss\r | |
| 385 | \r | |
| 386 | ;; UINT32 Cr0, Cr1, Cr2, Cr3, Cr4;\r | |
| 387 | pop eax\r | |
| 388 | mov cr0, eax\r | |
| 389 | add esp, 4 ; skip for Cr1\r | |
| 390 | pop eax\r | |
| 391 | mov cr2, eax\r | |
| 392 | pop eax\r | |
| 393 | mov cr3, eax\r | |
| 394 | pop eax\r | |
| 395 | mov cr4, eax\r | |
| 396 | \r | |
| 397 | ;; restore general register\r | |
| 398 | pop edi\r | |
| 399 | pop esi\r | |
| 400 | pop dword [ebp] ; save updated ebp\r | |
| 401 | pop dword [ebp + 4] ; save updated esp\r | |
| 402 | pop edx\r | |
| 403 | pop ecx\r | |
| 404 | pop ebx\r | |
| 405 | pop eax\r | |
| 406 | \r | |
| 407 | mov esp, ebp\r | |
| 408 | pop ebp ; restore ebp maybe updated\r | |
| 409 | pop esp ; restore esp maybe updated\r | |
| a302263e | 410 | sub esp, 4 * 3 ; restore interrupt pushced stack\r |
| a338fb22 LG |
411 | \r |
| 412 | iretd\r | |
| 413 | \r |